Whether your little one is pizza-ing down the bunny slope in a blaze of glory or lapping the local sledding hill until the sun goes down, he'll stay warm and dry in the Patagonia Snow Bile Bib Pants. Designed to keep winter-loving adventurers outside where they belong, these bibs deliver waterproof protection and insulated warmth for the coldest and snowiest days. A high-performing H2No membrane maintains its waterproof protection through snowball after snowball, while Thermogreen insulation keeps your little explorer cozy and warm, even when they've been rolling in wet snow since the moment school was officially cancelled. Ankle gaiters work to keep out snow when they're trudging through knee-deep sidewalks, and the full-bib design provides added coverage in case snow manages to sneak into their jacket. And Patagonia knows that kids grow in a flash practically overnight, which is why these bibs have adjustable straps and extendable legs to help maintain a good fit when suddenly your tiny tot isn't quite as tiny anymore.